Meanwhile, toss mushrooms with dressing in bowl. Add mushrooms to grill with onions. Close grill. Grill 2 to 4 minutes or until vegetables are tender. Remove vegetables from grill; cover to keep warm.

3

Brush beef steaks with remaining dressing in bowl. Sprinkle both sides of steaks with salt, chili powder, garlic pepper and cumin. Place on grill. Close grill. Grill 3 to 5 minutes or until desired doneness. Serve onions and mushrooms with steaks.